You're listening to Bulletproof Radio with Dave Asprey.

Today's cool fact of the day is that Henrietta Swan leave it, or lev it, was born 150 years

ago on July 4th, and she mapped the stars of the Harvard Observatory.

At the time she used the most advanced photographic and spectroscopic methods she could find,

and she figured out that you could measure the brightness of thousands of stars.

And she noticed that the stars' brightness varied on a regular schedule, depending on

just their intrinsic brightness, and she worked out something called period luminosity

relationship in 1908, which gave astronomers a powerful tool to measure the distance to

stars and other astronomical objects.

And her work, this is something you've probably never heard of, made most of the 20th centuries

most dramatic understandings of what's happening in space possible.

Which is really amazing.

I didn't know until I was doing research for the show that that kind of knowledge existed

that long ago.

So if you're thinking, wow, progress is really slow, well, you could say it's really slow.

You could also say that was only 100 years ago out of the thousands of years we've been

around.

And we're able to do more now than we ever have in all history.

And just knowing this kind of stuff makes me happy, hopefully made you happy too.

Today's guest is Dawa Tarjan Phillips, who's a Santa Barbara, California-based mindfulness

and meditation expert, an author, entrepreneur, spiritual teacher, researcher, educator,

and really, fantastically interesting guy who's been written about him New York Times and

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